Methane Barrier
Location Hawaii
Customer Hawaiian Electric Company
Completed February 2009

Project Scope; Passive methane barrier system installation.

The system consisted of;

  • 45 Mil XR5 Geosynthetic Liner (Methane Barrier)
  • 12 oz Geotextile
  • 1000 LF of SS Mechanical Attachment.

ECA completed this project in February of 2009.

This passive methane barrier system was completed in multiple mobilizations. Coordination with contractors was a key factor on this project. ECA worked simultaneously in different areas of the site. There were over 150 penetrations through the liner. The seams were vacuum tested and the entire system smog tested to ensure a leak proof system.

To learn more about methane barriers visit us at

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